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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Front feet and head first. (except for hogs and dogs)






2. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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3. 147 days






4. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






5. Days which have decreasing daylight hours

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6. What helps regulate spermatogenesis?






7. 14-19 (17) days






8. ~60 days before calving






9. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






10. Milk ~305 days - dry 60 days prior to calving






11. To remove/separate testicles from animal's body before animal reaches puberty






12. Sperm is produced here






13. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






14. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






15. 19-23 (21) days






16. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






17. Produce testosterone. located between the seminiferous tubules






18. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






19. What about the sperm for a bull which has been castrated but still has testicles?






20. Can survive ~7 days in cow. vast majority <48 hours






21. Way to know everything is alright with the breeding male






22. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






23. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






24. Urinary calculi.






25. When are dairy cattle dehorned?






26. ~60 days before calving






27. Produce testosterone. located between the seminiferous tubules






28. 26 hours after estrus begins






29. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






30. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






31. 4-6 days






32. Milk ~305 days - dry 60 days prior to calving






33. 24 hours before end of estrus cycle






34. Sperm is produced here






35. (switzerland) 2nd in size and milk production - most muscle -






36. Animals which have many estrous periods per year (ex: cow - sow)






37. Parturition is controlled by...






38. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






39. Male on one pin and female on other side






40. Failure to have both testis (gonads) descend






41. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






42. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






43. Microscopic - make sure not sterile - very few bulls are actually tested






44. Scar tissue plugs up chambers of udder






45. 26 hours after estrus begins






46. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






47. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






48. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






49. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






50. Luteolysis happens because of the ____________ hormone